Effects of Welding Pulse Energy and Fluoride Ion on the Cracking Susceptibility and Fatigue Behavior of Nd:YAG Laser-welded Cast Titanium Joints

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概要

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• In this study, the cracking susceptibility and fatigue behavior of Nd:YAG laser-welded cast Ti joints (welding pulse energy: 11, 15, and 18 J) in fluoride-containing (0 and 0.5% NaF) artificial saliva were evaluated using constant elongation rate test (CERT) and fatigue test (FT), respectively. Both CERT and FT were also carried out in open air as controls. Results showed that increasing the welding energy increased the elongation and fatigue life, but decreased the tensile strength, of cast Ti joints in open-air environment. With a welding energy of 11 J, the fluoride ions in the artificial saliva increased the cracking susceptibility and decreased the fatigue life of Ti joints. When the welding energy exceeded 15 J, the presence of fluoride ions still increased the cracking susceptibility, but did not reduce the fatigue life of Ti joints. Rupture of Ti joints-if it occurred-occurred only at the welded metal (versus the non-welded part).

• 日本歯科理工学会の論文

著者

• Hung Chun-cheng

  Graduate Institute Of Dental Sciences Kaohsiung Medical University

• Chen Fang-lung

  Institute Of Oral Materials Science Chung Shan Medical University

• Huang Her-hsiung

  Faculty Of Dentistry School Of Dentistry National Yang-ming University:department Of Dentistry Taipe

• LIN Mau-Chin

  Department of Dental Laboratory Technology, Central Taiwan University of Science and Technology

• LIN Chien-Chan

  Institute of Oral Materials Science, Chung Shan Medical University

• LIN Sheng-Chieh

  Department of Dental Laboratory Technology, Shu-Zen College of Medicine and Management

• HSU Chii-Chih

  Institute of Oral Materials Science, Chung Shan Medical University

• LEE Shyh-Yuan

  Faculty of Dentistry, School of Dentistry, National Yang-Ming University

• Lin Mau-chin

  Department Of Dental Laboratory Technology Central Taiwan University Of Science And Technology

• Lin Sheng-chieh

  Department Of Dental Laboratory Technology Shu-zen College Of Medicine And Management

• Hsu Chii-chih

  Institute Of Oral Materials Science Chung Shan Medical University

• Lee Shyh-yuan

  Faculty Of Dentistry School Of Dentistry National Yang-ming University

• Lin Chien-chan

  Institute Of Oral Materials Science Chung Shan Medical University

• HUNG Chun-Cheng

  Graduate Institute of Dental Science, Chung-Ho Memorial Hospital, Kaohsiung Medical University

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