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Saturday, 17 October 2009

Materials Views: Materials Chemistry, Materials Physics, Materials Science Nano-science and technology

There is much to be leaned in all the fields underlined in the above post title.

The scope is wide and demandingly specialised in terms of the science, technologies and engineering involved, all brought together by Wiley Intercience in their very attractive publication, Materials Views. Moreover their currebt early views are freely available online to peruse or download accordingly.

Most papers deal with the nanoscale. I noted especially papers:
a) using the concepts of materials testing and strength,
b) energy vectors and storage, batteries, hydrogen storage..
c)electronic materials
d) biomimetics and softmaterials, polymers..

Run an eye over the list of papers and abstracts and make your own choices,
join me in reading your favourite subjects. And why not give your view your materials view?

Sincerely,
JA

en référence à : Wiley InterScience :: JOURNALS :: Advanced Materials (afficher sur Google Sidewiki)

Tuesday, 13 October 2009

Bioactive Glasses, Steel Slags, Glasses and Ceramics from waste


The impressive Sage Publication catalogue, currently freely available online, encouraged me to scan widely.

In the previous post, I naturally started to focus my scan on their materials science and engineering offer. (again) Not surprisingly, I stopped-off at the J. of Biomaterials Applications, where I learned of the field of Bioactive Glasses whose chemical compositions reminded me to some extent of earlier work previously encountered in Steelmaking R&D and byproduct valorisation (as early as 1970)

There is nothing like doing a little brainstorming to clear the mind. Since I am "no longer "in the box" so to speak, I found it is easy to think "outside the box" for what it's worth! I made a hazardous suggestion that one could possibly seek synergies between the high value potential of bioactive glasses eg. previous post, and glasses and ceramics obtained from steelmaking slag.

Now as a member of The Institute (IMM3) prudence and loyalty, not to mention privileged member access to The Institute catalogue (more than 20 peer reviewed materials dedicated journals, leads me to take a new look at these fields. I did not have to look far.
From the first on The Institute list "Advances in Applied Ceramics I found a Special Issue on Bio-ceramics for Tissue and Bone Engineering and Drug delivery, Jan 2009. It's editorial was entitled "Glasses and ceramics from waste" My suggestion appears still far reached, cf. quote from the guests editors, P.Colombo, Univ of Padova, Italy, A.R. Boccachini and Bill Lee both of IC London,UK London
"Considerable research effort has been expended in the last 30 years concerning the production of glasses and glass-ceramics from a variety of silicate wastes including coal combustion ash, mud from zinc metal hydrometallurgy, slag from steel production, ash and slag from waste incinerators, red mud from alumina production, electric-arc furnace dust, foundry sands as well as glass cullet and various waste mixtures. Vitrification is typically used to transform hazardous residues into inert slags, with significant advantages in terms of reduction in the volume occupied by the residue, as well as in the immobilisation of harmful pollutants within a chemically-durable inorganic matrix. The vitrified material, which can often contain complex crystalline phases, can then either be land-filled
or be used as the raw material for other products."

Choke or take a breath of fresh air!
Not quite the bioactivity sought in medical circles, I can easily imagine.

Then high endeavour, breaking fundamental and applied barriers to progress is what research is all about, I believe?

Feedback welcomed.

NB. Google Sidewiki recovered post via Google profile.

REFERENCE:
Advances in Applied Ceramics free online and downloading to members of IOM3.

IOM3 Member writes for new users of Sidewiki- Back-up your Review.

Of course as a lifelong member, I make frequent use and reference to this attractive and well presented site. Further I delve deeply into it's member resources, in particular to it's peer reviewd journals, perhaps more so as an "off-shore metallurgist, materials scientist and engineer in a relatively remote location.

I have a second reason to make this entry. I was thoroughly enjoying using Google's Sidewiki for my blog and sharing views on my first experiences yesterday 12 Oct.09 with ease and fluency biefly reviewing pubished journal materials, when I hit a snag apparently specific to IOM3 journals secured site. Very pleased with my prose, on Bioactive Glasses and Steelmaking Slag Valorisation. I now appear to have lost the full text! So a word of caution to new reviewers and sharers, take care to back-up your text. Cheers and good luck.

in reference to: Welcome | IOM3: The Global Network for Materials, Minerals & Mining Professionals (view on Google Sidewiki)

Monday, 12 October 2009

Bioactive Glasses_J of Biomaterials Appications Sage Publications free until 31Oct09

A very rapid glance at the compositions of bioactive glases in this paper, may intregue process metallurgists and steelmakers all familiar with nature and composition of their favourite chemical reactant, slags. Could there be possibly routes to improving value in recycling this abondant by-product?

Feel free (till 31 Oct09) to read the journal.

Please do not hesitate to send all your feedback.

Introduction to Bioactive Glass

Ref. J.of Bioactive Materials.

Reference: Surface Modification of Bioactive Glasses and Preparation of PDLLA/Bioactive Glass Composite Films -- Gao and Chang 24 (2): 119 -- Journal of Biomaterials Applications (view on Google Sidewiki)

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