Abstract
Various tests have been performed to develop a ceramic-ceramic (C-C)joining method that utilizes ultra-fine particles (UFP) as the joining interlayer. The ceramic material to be joined is silicon nitride (Si{sub 3}N{sub 4}) and the interlayer material are Si{sub 3}N{sub 4}-UFP and Al{sub 2}O{sub 3}-UFP. Test samples were made by a two step process consisting of pre-joining and following HIP treatment. The bending strength of the samples and the morphology of the joined parts were measured and examined. The experimental results revealed that the bending strength of the joined samples was strongly influenced by the kind of UFP material and the surface flatness of the bulk ceramics. A joined sample made of bulk Si{sub 3}N{sub 4} rods with a surface flatness of 0.3 {mu}m and Al{sub 2}O{sub 3}-UFP showed a bending strength of 970 MPa in a wide temperature range up to 800 degC. To demonstrate the usefulness of the new C-C joining method, two bulk Si{sub 3}N{sub 4} pipes (outer diameter: 50mm, length: 50mm, thickness: 5mm) were joined by using Al{sub 2}O{sub 3}-UFP. The helium leak rate at the joined part was found to be less than a minimum detectable value of 10{sup -9} Pa{center_dot}m{sup 3}/sec (He). (author).
Abe, Tetsuya;
Murakami, Yoshio;
Aihara, Tomoyasu;
[1]
Takeuchi, Hisao;
Yamakawa, Akira
- Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Citation Formats
Abe, Tetsuya, Murakami, Yoshio, Aihara, Tomoyasu, Takeuchi, Hisao, and Yamakawa, Akira.
Joining of silicon nitride ceramics by utilizing interlayers of ultra-fine particles.
Japan: N. p.,
1994.
Web.
Abe, Tetsuya, Murakami, Yoshio, Aihara, Tomoyasu, Takeuchi, Hisao, & Yamakawa, Akira.
Joining of silicon nitride ceramics by utilizing interlayers of ultra-fine particles.
Japan.
Abe, Tetsuya, Murakami, Yoshio, Aihara, Tomoyasu, Takeuchi, Hisao, and Yamakawa, Akira.
1994.
"Joining of silicon nitride ceramics by utilizing interlayers of ultra-fine particles."
Japan.
@misc{etde_10121656,
title = {Joining of silicon nitride ceramics by utilizing interlayers of ultra-fine particles}
author = {Abe, Tetsuya, Murakami, Yoshio, Aihara, Tomoyasu, Takeuchi, Hisao, and Yamakawa, Akira}
abstractNote = {Various tests have been performed to develop a ceramic-ceramic (C-C)joining method that utilizes ultra-fine particles (UFP) as the joining interlayer. The ceramic material to be joined is silicon nitride (Si{sub 3}N{sub 4}) and the interlayer material are Si{sub 3}N{sub 4}-UFP and Al{sub 2}O{sub 3}-UFP. Test samples were made by a two step process consisting of pre-joining and following HIP treatment. The bending strength of the samples and the morphology of the joined parts were measured and examined. The experimental results revealed that the bending strength of the joined samples was strongly influenced by the kind of UFP material and the surface flatness of the bulk ceramics. A joined sample made of bulk Si{sub 3}N{sub 4} rods with a surface flatness of 0.3 {mu}m and Al{sub 2}O{sub 3}-UFP showed a bending strength of 970 MPa in a wide temperature range up to 800 degC. To demonstrate the usefulness of the new C-C joining method, two bulk Si{sub 3}N{sub 4} pipes (outer diameter: 50mm, length: 50mm, thickness: 5mm) were joined by using Al{sub 2}O{sub 3}-UFP. The helium leak rate at the joined part was found to be less than a minimum detectable value of 10{sup -9} Pa{center_dot}m{sup 3}/sec (He). (author).}
place = {Japan}
year = {1994}
month = {Oct}
}
title = {Joining of silicon nitride ceramics by utilizing interlayers of ultra-fine particles}
author = {Abe, Tetsuya, Murakami, Yoshio, Aihara, Tomoyasu, Takeuchi, Hisao, and Yamakawa, Akira}
abstractNote = {Various tests have been performed to develop a ceramic-ceramic (C-C)joining method that utilizes ultra-fine particles (UFP) as the joining interlayer. The ceramic material to be joined is silicon nitride (Si{sub 3}N{sub 4}) and the interlayer material are Si{sub 3}N{sub 4}-UFP and Al{sub 2}O{sub 3}-UFP. Test samples were made by a two step process consisting of pre-joining and following HIP treatment. The bending strength of the samples and the morphology of the joined parts were measured and examined. The experimental results revealed that the bending strength of the joined samples was strongly influenced by the kind of UFP material and the surface flatness of the bulk ceramics. A joined sample made of bulk Si{sub 3}N{sub 4} rods with a surface flatness of 0.3 {mu}m and Al{sub 2}O{sub 3}-UFP showed a bending strength of 970 MPa in a wide temperature range up to 800 degC. To demonstrate the usefulness of the new C-C joining method, two bulk Si{sub 3}N{sub 4} pipes (outer diameter: 50mm, length: 50mm, thickness: 5mm) were joined by using Al{sub 2}O{sub 3}-UFP. The helium leak rate at the joined part was found to be less than a minimum detectable value of 10{sup -9} Pa{center_dot}m{sup 3}/sec (He). (author).}
place = {Japan}
year = {1994}
month = {Oct}
}