섬유

bonding thermosprayed silicon to glass-ceramic

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 345
the results of examining alternate surface preparations which create a roughened substrate without the usual weakening of the finished article are given. the surface roughness essential to the mechanical bond is produced when the article is in the green or glassy state, and in a subsequent processing step the glass is converted to glass-ceramic by a crystallization heat treatment. the simplest application is the fabrication of roughened durable ceramic substrates for spraying after the crystallization step. profilometry and measurements of silicon metal coating adhesion to a lithium aluminosilicate glass-ceramic indicate that for hard glasses the crystallization step does not reduce the surface roughness. when high temperature materials are to be used as coatings, the spraying step can be performed while the substrate is in the glassy state, and then the entire article is subjected to the crystallization heat treatment
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