Spinel powder and manufacturing process therefor, and processes for producing thermal spraying film and gas sensor elements
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United States of America Patent
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May 17, 2016
Grant Date -
Feb 20, 2014
app pub date -
Mar 29, 2012
filing date -
Apr 28, 2011
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Abstract
Disclosed is a spinel powder obtained by mixing a magnesia raw-material with an electrically fused alumina, followed by firing of the mixture. The particles of the spinel powder are coated with granular spinel particles. Therefore, there are provided a spinel powder and a simple method for producing the same, which is superior in thermal spraying property and has a unique particle shape. In particular, there is provided a method for producing a spinel powder which contributes to a reduction in the variation of characteristics of sensors, for example, as a thermal spraying powder for forming a protective coating of a gas sensor element.
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