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Ceramic materials are used in nuclear, chemical and electrical power generation industries because of their ability to withstand extreme environments. However, at high temperatures, ceramics are susceptible to thermal-shock fractures caused by rapid temperature-changing events, such as cold water droplet contact with hot surfaces. In a novel interdisciplinary approach, engineers report the use of a cheap, simple, water-repelling coating to prevent thermal shock in ceramics.
Source: Improved thermal-shock resistance in industrial ceramics
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Improved Thermal-Shock Resistance in Industrial Ceramics
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The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
TOO BAD YOU CAN'T BUY a voodoo globe so that you could make the earth spin
real fast and freak everybody out.
-- Jack Handey, The New Mexican, 1988.
(Score: 0) by Anonymous Coward on Friday August 24 2018, @06:55PM (9 children)
I have seen this before and am curious: why do Americans assume that borosilicate glass can't be bought anymore just because it isn't called Pyrex? There's plenty of true borosilicate glass under other brands.
(Score: 0) by Anonymous Coward on Friday August 24 2018, @08:50PM
Can't handle the dynamics of a changing free market.
(Score: 0) by Anonymous Coward on Friday August 24 2018, @09:58PM (5 children)
Well, is there an easy test to see if glass cookware is made of the good stuff or some lower quality substitute?
As I understand it, the reason original Pyrex(tm) is good is because it has near zero thermal coefficient of expansion over the working temperature range. Thus thermal shock does not cause mechanical size changes. Same for the glass or ceramic used to make "counter that cooks" range tops.
Does the good stuff have a different index of refraction that could be measured easily? Maybe some other easily measured property?
(Score: 1) by khallow on Saturday August 25 2018, @03:49AM (2 children)
(Score: 0) by Anonymous Coward on Saturday August 25 2018, @02:14PM (1 child)
Wooosh -- the idea is to verify the type of glass before buying it.
(Score: 1) by khallow on Sunday August 26 2018, @03:26AM
(Score: 3, Informative) by deimtee on Saturday August 25 2018, @09:19AM
The old good pyrex has a slight yellowish tinge to it. The new crap pyrex is blueish.
Not sure if that is universal, and whether whoever is currently fucking the pyrex name is likely to wake up and start making yellow shit to make a few more dollars.
If you cough while drinking cheap red wine it really cleans out your sinuses.
(Score: 0) by Anonymous Coward on Saturday August 25 2018, @12:08PM
The easy test is read the packaging and look for the word borosilicate.
(Score: 1, Informative) by Anonymous Coward on Saturday August 25 2018, @05:28AM (1 child)
Two things:
1. the problem is mostly that the "old pyrex" of value is now lost among the new
2. nobody in north america brands home cooking glass as borosilicate. Yes, for installed glass cooking surfaces, and for chemists. But not houseware glass. So there's no way to buy it /reliably/ which is the point of the parent complaint.
(Score: 1, Informative) by Anonymous Coward on Saturday August 25 2018, @11:03AM
There's life outside north america. I have used SIMAX (Czech) and Boral (German) glassware and they have never failed me when handling heat/cold (only mechanically due to my clumsiness).
https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=simax [amazon.com]