Abstract
A prototype hot hardness tester manufactured by Electrofuel Manufacturing Co., Ltd. is evaluated by measuring the hardness of two ceramic cutting tool materials. Hardness values derived from the diagonals of indentations are comparable with Vickers hardness measurements made on a standard microhardness tester. The room temperature hardness of the ceramic composite Alotic is greater than that of a composite of Si3N4 with additions of TiN. At higher temperatures, the hardness of the Alotic composite falls more rapidly than that of the Si3N4 composite, and this is associated with softening of the Al2O3 matrix. For a rigidly supported specimen, the plastic component of the traverse of the indenter can be isolated from the total traverse, and used as a measure of the depth of the impression for calculating Vickers hardness values from high temperature indentations.
Original language | English |
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Title of host publication | Unknown Host Publication Title |
Publisher | Publ by Canadian Institute of Mining, Metallurgy and Petroleum |
Pages | 399-405 |
Number of pages | 7 |
ISBN (Print) | 0919086438 |
State | Published - 1993 |
Externally published | Yes |
Event | Proceedings of the International Symposium on Developments and Applications of Ceramics and New Metal Alloys - Quebec City, Que, Can Duration: Aug 29 1993 → Sep 2 1993 |
Conference
Conference | Proceedings of the International Symposium on Developments and Applications of Ceramics and New Metal Alloys |
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City | Quebec City, Que, Can |
Period | 08/29/93 → 09/2/93 |