Pages

My professional profile on Linkedin

View James Alexander's profile on LinkedIn

Where my visitors are

A380's TRENT XWB

Materials Science and Engineering, Durable Development, Recycling..

Custom Search

Blog List-Free Science and Engineering Information Resources cf also Side and Bottom menu bars

Scientific Reports - nature.com science feeds

Sunday, 28 June 2015

MIT Technology Review’s 50 Smartest Companies 2015, from Tesla to Uber | MIT Technology Review


Nice work by MIT researchers and MIT Review team. Great graphics and graphical interactivity via the link to MIT Review's site beneath the picture:

MIT Technology Review’s 50 Smartest Companies 2015, from Tesla to Uber | MIT Technology Review: "50 Smartest Companies 2015"

Cheers.and enjoy the info.
'via Blog this'

Thursday, 11 June 2015

Taking the heat off the chip_Global Thermal Interface Materials Report 2015 - Status, Opportunities, Market Forecasts to 2025 -- DUBLIN, June 5, 2015 /PRNewswire/ --


Here is a short rapid introduction and overview to a still hot topic-materials to markets 


"Overheating is the most critical issue in the computer industry. It limits further miniaturisation, power, performance and reliability. The escalation of power densities in electronic devices has made efficient heat removal a crucial issue for progress in information, communication, energy harvesting, energy storage and lighting technologies. As long as electronic systems aren't monolithic, but are built from a wide range of materials such as metals, polymers, ceramics and semiconductors, there will be a need for thermal interface materials." from PRNewswire


The contact area between high power, heat generating components and heat sinks can be as low as 3%, due to the micro-scale surface roughness. Thermal interface materials are required to enhance the contact between the surfaces, and decrease thermal interfacial resistance, and increase heat conduction across the interface. 

Proper selection of Thermal Interface Materials (TIM) is crucial for the device efficiency. Instead of sophisticated cooling technique, it is often better to invest in the interface material. Without good thermal contact, the use of expensive thermally conducting materials for the components is a waste. 


1. Innovation Drivers in this industry

2. Thermal Interface Materials 2015-2025 includes a technology appraisal of the ten key technologies: 


1. Pressure-Sensitive Adhesive Tapes
2. Thermal Adhesives
3. Thermal Greases
4. Thermal Gels, Pastes and Liquids
5. Elastomeric Pads
6. Phase Change Materials
7. Graphite
8. Solders and Phase Change Metals
9. Compressible Interface Materials
10. Liquid Metals 
3. Current and growing opportunities for these technologies

4. The Companies. 

- 3M Electronic Materials
- AI Technology
- AIM Specialty Materials
- AOS Thermal
- DK Thermal
- Dow Corning
- Dymax Corporation
- Ellsworth Adhesives
- Enerdyne
- European Thermodynamics Ltd
- Fralock
- Fujipoly
- GrafTech
- Henkel
- Indium Corporation
- Inkron
- Kitagawa Industries
- LORD
- Laird Tech
- MH&W International
- Minteq
- Momentive
- Parker Chomerics
- Resinlab
- Schlegel Electronics Materials
- ShinEtsu
- Timtronics
- Universal Science 


Global Thermal Interface Materials Report 2015 - Status, Opportunities, Market Forecasts to 2025 -- DUBLIN, June 5, 2015 /PRNewswire/ --:



LINK_for more information.



'via Blog this'

Wednesday, 10 June 2015

free Whitepaper on Effective Tolerance Management_EnginSoft

Any manufactured object differs in shape and dimension from its ideal design. This variation does not necessarily cause problems regarding functionality, but it always contributes to cost.
Find out why more and more companies implement GD&T as an essential element of their design process in this easy to understand whitepaper with examples.
REF:

Effective Tolerance Management | EnginSoft

Wednesday, 13 May 2015

EUROSUPERALLOYS 2014_ MATEC Web of Conferences. Open Access

 "EUROSUPERALLOYS 2014 – 2nd European Symposium on Superalloys and their Applications"
was held in Giens, France in May 2014.

Ten full sessions and eleven poster sessions were held on many (most) aspects of  Superalloys processing and properties. Superalloys, as the name implies, have superior properties.  They are used in applications involving high demands in performance and reliability namely strength high temperatures and corrosive environments such as those encountered especially in aircraft_aero-engines and improved energy production plant.


List of themes is as follows: please excuse the EU for allowing US spelling rather than the original and UK spelling behaviour


I did notice however that neither in these open access conference papers nor in web based available manufacturers specifications that the limits on such common trace elements as S (sulphur) and P (phosphorus) appeared high when compared with the practice and practise, of which I am aware. Admittedly dated! However I honestly report here that a couple of my ex-colleagues involved in such advance metallurgical processing and development in PM (powder metallurgy) requested "current S levels be lowered from a commonly specified 0.015%Smax. I was able to respond immediately and informed my client-collegues that the first trials had already proved successful as usual with "my" desulphurization  technique.

My peer reviewed paper is now freely available to our members of IOM3_The Institute of Materials Minerals and Mining entitled:

"Optimizing deoxidation and desulphurization during vacuum induction melting of  (Super) alloy 718. J.Alexander, Materials Science and Technology,(MST) published Feb. 1985.(MST's 2nd issue).

Now let's not be shy. My Indian colleagues (most of whom are retired today) from the MIDHANI, Ministry of Defence  plant in Hyderabad can honestly vouch for my desulphorization performance. As  guarent for the "three melt-shop know-how transfer contract, I was called upon to assist during start-up in Hyderabad. Unfortuneately the only raw material for the very low P (phosphorus) grade to be made had about 3times mor P than our recommended raw material. Well, under some pressure from the then, chairman no less, I accepted the challenge and brought the damed thing into the aimed spec.

I was never informed whether the final product achieved the result originally set in the "Know-how" agreement.

Post Scriptum:
Thing must have sorted themselves out considering that very recently India has also bought the french jet fighter The Rafale and for good or bad Mr. Mittal has bought over the company where I had enormous fun both at work and for pleasure. I took up my soccer game after a too long lay-off during studies and early laboratory research work..

I do hope you enjoy sharing my experience.

 Best regards.




EUROSUPERALLOYS 2014 – 2nd European Symposium on Superalloys and their Applications

MATEC Web of Conferences:  PS this is a window to a much larger peer reviewed open access web library

'via Blog this'

Wednesday, 6 May 2015

LINK_Innovation union-A Free well illustrated pocket guide on Innovation & Growth_A Europe 2020 initiative_Update

Let me bring this free guide to the attention of my friends and colleagues in metallurgy, materials science and engineering, especially our members of  IOM3 (UK)  and SF2M (Fr)Let me thank the EU for the RSS feed which allows me to bring some very good summaries and overall views of our multidisciplinary subject.

LINK_

Innovation union-A Free well illustrated pocket guide on Innovation & Growth_A Europe 2020 initiative


Kind Regards. JA.

Monday, 4 May 2015

Imphy Special Steels & Alloys Steelworks_Off the EU radar! & My Local weather here in the centre of France_Info Update

I have just included Meteo France's weather provision for my area. The meteo station is nearby (a couple of kms away) so is pretty reliable. Potential visitors will find the city of Nevers lies on the the famous N7 road and on the banks of the Loire river. Access to water from France's longest river La Loire led Colbert to choose the region for the "once"! famous steelworks at Imphy situated  15kms from Nevers. The much modernised factory where I had the privilege to work for many years researches and manufactures a huge variety of special steels, and alloys. They range from steels for aircraft undercarriage through delicate to manufacture iron-chromium(Fe-Cr) and iron-chromium-nickel (Fe-Cr-Ni) stainless, corrosion resistant steels.  They are the world reference for weldable iron-nickel (Fe-36%Ni) Invar sheet metal for liquid gas sea transportation. The range of Fe-Ni alloys, with or without cobalt (Co) runs from Fe-30%Ni to Fe-80%Ni with dilatometric, magnetic and electrical properties.  If this is not a sufficiently, highly sportive, endeavour then add the the aero-engine alloy family: The famous Superalloys; Inconels,Udimets, Waspalloys and an early competitor in power metallurgical research, development and manufacture; I personally had privileged fun with Superalloy development; melting and refining, introducing revert material into aeroengine alloys to meet the most stringent requirement of the civil aviation authorities and the major aeroengine manufacturers, GE-SNECMA,(USA-FR) Rolls Royce,(UK) Pratt & Whitney (USA), Turbomeca (Fr), MTU(Ger). Refs below

I know that at least one of my ex-colleagues must be pleased that France's Rafale Fighter Jet aircraft is now selling, namely Dr. G. Raisson who got the powder metallurgical manufacturing up and running. Unfortuneatly two others who deserve great credit are nolonger with us: My long time boss Y. Honnorat, (Ecole Centrale Paris) one of the most brillant minds I have ever encountered and my dear friend and ex-colleage Dr. James H. Davidson (ex Sheffield Univ.& Imphy Research Centre).

 (Cheers and Kind regards)

My presentation of the local weather here, has lead me to decline with many thanks this once proud special steels and alloys plant. Proud to have developed the ideas of  Charles Edouard Guillaume, whom my British metallurgical colleagues, members of IOM3_Institute of Mining, Minerals & Materials consider (tongue in cheek) to be the only winner of the Nobel Prize in Metallurgy (Physics of course)  Guillaume was based at the International Bureau of Weights & Measures (NPL-UK equivalent)and his "associate" in Industry (Imphy based) Pierre Chevenard. I have had the privilege of working with Research and Manufacturing Development Metallurgists who have personally known Pierre Chevenard.

Now I am reporting this due to my astonishment upon reading the EU-report: Metallurgy Europe –A Renaissance Programme for 2012-2022 list in Annex 2. Potential Beneficiaries from European Industry (non-exhaustive!) 

Non-exhaustive, is no excuse! This unique entity once"Imphy SA" Three melt-shops, Electric Arc mini mill at least 20years ahead of USA, It's own on site R&D centre, developing its own materials while others in France bought US technology and know-how. Plus three first class laboratories, 1 Chemical Analysis for production and quality requirements-cf. scope of materials above. 2. Mechanical properties, from cryogenic to high temperature corrosion and strength. Macroscopic and microscopic control and development. 3. Physical properties lab for dilatometric,magnetic and electrical control and development.    

That this once proud industrial innovator comes under the relatively unknown name APERAM-Chairman Mr Lakshmi Mittal. What it is today, I can hardly imagine. Last news I had was that the 1500 person strongly integrated Imphy site (Imphy SA) in my days appears to be a hotchpotch composed of : Steel melting-Mittal, Special Iron Steels, Stainless Steels  & Superalloys "Techphy-Eramet_Aubert & Duval". Will this new attempt to bring perhaps a sense of unity and the strong sense of identity of my days succeed?  Will the latest rationalisation demotivate under the still unknown company, called APERAM, unknown at least in the above referenced EU listing.  
PS.
I do  hope that success is on the agenda for the sake of current employees and for our relatively deprived region, easily forgotten also by our regional capital of Bourgogne (Burgundy) the city of Dijon. No help in view alleviated by transportation difficulties. Indeed it is much easier to travel to Paris or Clermont-Ferrand and should I dare say more useful? National plans for an enlarged Burgundy will penalise further our "West Burgundy" On the EU french divide we are as far from capitol Strasbourg as is possible (Grand Est-Greater East). Perhaps Paris in it's plans for the greater Paris_Isle-de-France will include our city Nevers and our department (county) La Nièvre and so benefit from the economic attaction, and over-populated capital, Paris.


If any of my readers can do a better summary of such industrial (passed-lost?) glory I would be please to hear.



Sincerely.

1. Metallurgy Europe –A Renaissance Programme for 2012-2022

2. Optimizing deoxidation and desuIphurization during vacuum induction melting of alloy 718 (freely available to IOM3 members)
Article Type: Research Article
pp. 167–170 Preview | Abstract | PDF (433 KB)
Tried and Proven by melting bi-annually; 2 series of 6 VIM melts, each melt weighing  4.6(5)Tonne batches of lingot electrodes by bottom pouring by VIM for VAR Remelting. 

3. Reliable Source of Superalloy 718 revert material :


 Ireland Alloys Ltd, Scotland, UK.


High Purity Cr sources for Superalloys

Energy for th Future:Phil.Trans.A-Vol. 365, N° 1853 / April 15, 2007, curtesy The Royal Soc. London

Engineered foams and porous materials: Phil Trans A. Vol 364, N° 1838 / 06 curtesy_The R Soc. Lond