Mold filling of titanium alloys in two different wedge-shaped molds.
Mold filling of titanium alloys in two different wedge-shaped molds.
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DOI：
10.1016/s0142-9612(01)00357-x
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发表时间：
2002-06
期刊：
影响因子：
14
通讯作者：
H. Shimizu;T. Habu;Y. Takada;K. Watanabe;O. Okuno;T. Okabe
中科院分区：
文献类型：
--
作者：
H. Shimizu;T. Habu;Y. Takada;K. Watanabe;O. Okuno;T. Okabe
纯钛和钛合金是制造铸造牙科器械的潜在材料。生产优质铸件的一个重要因素是金属填充模具的能力。本研究使用楔形模具比较钛与传统牙科铸造合金的模具填充。所用金属为CP Ti、Ti-6Al-7 Nb、Ti-6Al-4V、含1和4wt% Cu的Ti、ADA III型金合金和Ni-Cr合金。铸件被切割成平行于三角形表面的四块。将模具填充评估为铸造楔的尖端与三角形的理论尖端之间的距离。与所有测试的金属相比，金合金的模具填充是上级的，而镍铬合金的模具填充是最差的。所有铸造钛金属在30°边缘角处均无统计学差异。在更锐利的15°角处，CP Ti和Ti-6Al-7 Nb上级两种Ti-Cu合金。虽然钛的模具填充不如金合金，但数据证明钛用于生产牙科器械是合理的。
Pure titanium and titanium alloys are potential materials for the fabrication of cast dental appliances. One important factor in producing sound castings is the capacity of the metal to fill the mold. This study used a wedge-shaped mold to compare the mold filling of titanium with that of conventional dental casting alloys. The metals used were CP Ti, Ti–6Al–7Nb, Ti–6Al–4V, Ti with 1 and 4wt% Cu and ADA Type III gold alloy and an Ni–Cr alloy. The castings were cut into four pieces parallel to the triangular surface. Mold filling was evaluated as the distance between the tip of the cast wedge and theoretical tip of the triangle. The mold filling of the gold alloy was superior compared to all the metals tested, while the mold filling of the Ni–Cr alloy was the worst. There were no statistical differences at the 30° marginal angle for all the cast titanium metals. At the sharper 15° angle, CP Ti and Ti–6Al–7Nb was superior to both the Ti–Cu alloys. Although the mold filling of titanium was inferior compared to the gold alloy, the data justify the use of titanium for the production of dental appliances.