Determination of the Influence of c-BN+h-BN Coating Structure on Brittleness
来源期刊：材料热处理学报2004年第5期
论文作者：Przemyslaw Libuda Maciej Kupczyk Przemyslaw Cieszkowski Adam Lejwoda
关键词：wear-resistant coatings; PVD; brittleness; structure;
摘 要：In the article is presented the brittleness study of boron nitride coatings deposited on cutting edges made of cemented carbides by the pulse-plasma method (PPD). Influences of the structure (density, pores, microcracks) of coating material on the brittleness and on selected technological parameters of boron nitride formation by PPD method particularly taking into account discharge voltage on brittleness are shown. Differences between values of both a1(300) and a1(500)coefficients characterized susceptibility to coatings cracking of investigated coating manufactured using different values of discharge voltage were defined. Results of an investigations have been confirmed usefulness of Palmqvist's method for measurement of coating susceptibility to brittle cracking.
Przemyslaw Libuda1，Maciej Kupczyk1，Przemyslaw Cieszkowski1，Adam Lejwoda1
(1.Poznan University of Technology, Institute of Mechanical Engineering, Poznan, Poland)
摘要:In the article is presented the brittleness study of boron nitride coatings deposited on cutting edges made of cemented carbides by the pulse-plasma method (PPD). Influences of the structure (density, pores, microcracks) of coating material on the brittleness and on selected technological parameters of boron nitride formation by PPD method particularly taking into account discharge voltage on brittleness are shown. Differences between values of both a1(300) and a1(500)coefficients characterized susceptibility to coatings cracking of investigated coating manufactured using different values of discharge voltage were defined. Results of an investigations have been confirmed usefulness of Palmqvist''s method for measurement of coating susceptibility to brittle cracking.
关键词:wear-resistant coatings; PVD; brittleness; structure;
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