Goto S, Nakai A, Miyagawa Y, Ogura H
Department of Dental Materials Science, Advanced Research Center, School of Dentistry at Niigata, The Nippon Dental University, Japan.
Dent Mater J. 2001 Jun;20(2):135-47. doi: 10.4012/dmj.20.135.
Eighteen Ag-Pd-Au-Cu alloys, consisting of nine Ag-Pd-Au-Cu mother compositions (Pd: 20, 30 or 40%, Au: 20%, Cu: 10, 15 or 20%, Ag: balance) containing either 5% Sn or 5% Ga as an additive metal, were experimentally prepared. Tensile strength, proof stress, elongation, elastic modulus, and Vickers hardness of these alloys were evaluated to clarify the potential of these alloys for use as ceramic-metal restorations as well as the effects of the Pd and Cu contents on their mechanical properties. The tensile strength, proof stress, elongation, elastic modulus and Vickers hardness of the 18 experimental alloys were in the range of 410.0-984.0 MPa, 289.7-774.3 MPa, 2.2-23.7%, 81.3-123.0 GPa and 135.7-332.3 HV1, respectively. Ten of the 18 experimental alloys can be used for ultra-low fusing ceramics based on their proof stress, elastic modulus, elongation and hardness. Between the Ga- and Sn-added alloys, differences in tensile strength, proof stress, elongation and hardness were found at several Ag-Pd-Au-Cu compositions.
实验制备了18种Ag-Pd-Au-Cu合金，它们由9种Ag-Pd-Au-Cu母合金成分组成（钯含量为20%、30%或40%，金含量为20%，铜含量为10%、15%或20%，其余为银），并添加了5%的锡或5%的镓作为添加金属。对这些合金的拉伸强度、屈服强度、伸长率、弹性模量和维氏硬度进行了评估，以阐明这些合金用作陶瓷-金属修复体的潜力以及钯和铜含量对其力学性能的影响。18种实验合金的拉伸强度、屈服强度、伸长率、弹性模量和维氏硬度分别在410.0-984.0MPa、289.7-774.3MPa、2.2-23.7%、81.3-123.0GPa和135.7-332.3HV1范围内。18种实验合金中有10种基于其屈服强度、弹性模量、伸长率和硬度可用于超低熔陶瓷。在添加镓和添加锡的合金之间，在几种Ag-Pd-Au-Cu成分下发现了拉伸强度、屈服强度、伸长率和硬度的差异。
