本文目录一览:
- 1、纯钛是什么材质?
- 2、纯钛与钛合金有什么区别
- 3、纯钛是什么颜色的?
- 4、纯钛和钛钢的区别
纯钛是什么材质?
属于轻金属。纯钛具有银白色金属光泽,是最重的轻金属,其沸点3260℃,其熔点高于铁和镍。纯钛在大多数介质中,比如在中性、氧化性和海水等介质中都有极高的抗蚀性。
即使在海水中,其抗腐蚀性仍然比铝合金、不锈钢等都高,一般经过多少年,表面也不会发生变化。此外,钛在各种浓度的硝酸和铬酸中稳定性也很高。
纯钛在大多数介质中,特别是在中性、氧化性和海水等介质中有极高的抗蚀性。在海水中的抗蚀性比铝合金、不锈钢和镍基合金还高;在工业、农业环境和海洋大气中虽经数年,表面也不发生任何变化。
氢氯酸、 *** 、盐酸、正磷酸和某些热的有机酸对钛的腐蚀作用较强;特别是氢氯酸。不管浓度或温度高低,均有很强的腐蚀作用。因此,氢氟酸是制备钛及钛合金金相试样时常用的腐蚀剂,也是酸洗液的主要成分。
纯钛与钛合金有什么区别
一、指代不同
1、纯钛:钛具有银白色的金属光泽。密度为4.51g·cm^-3,是最重的轻金属。
2、钛合金:是一种新型金属,钛的性能与所含碳、氮、氢、氧等杂质含量有关,最纯的碘化钛杂质含量不超过0.1%,但其强度低、塑性高。
二、特性不同
1、纯钛:熔点(1668±10)℃,沸点3260℃。熔点比铁和镍高。25C时的热导率为14.99W·(m·℃)^-1,只有铁的1/6,铝的1/16,对切削加工和焊接不利。25C时的膨胀系数为8.36×10^-6℃^-1。
2、钛合金:钛合金是以钛为基础加入其他元素组成的合金。钛有两种同质异晶体:882℃以下为密排六方结构α钛,882℃以上为体心立方的β钛。
三、用处不同
1、纯钛:纯钛在大多数介质中,特别是在中性、氧化性和海水等介质中有极高的抗蚀性。在海水中的抗蚀性比铝合金、不锈钢和镍基合金还高;在工业、农业环境和海洋大气中虽经数年,表面也不发生任何变化。
2、钛合金:钛合金具有强度高而密度又小,机械性能好,韧性和抗蚀性能很好。另外,钛合金的工艺性能差,切削加工困难,在热加工中,非常容易吸收氢氧氮碳等杂质。还有抗磨性差,生产工艺复杂。
参考资料来源:百度百科-钛合金
参考资料来源:百度百科-纯钛
纯钛是什么颜色的?
纯钛是银白色的。
钛是一种化学元素,化学符号Ti,原子序数22,在化学元素周期表中位于第4周期、第IVB族。是一种银白色的过渡金属,其特征为重量轻、强度高、具金属光泽,耐湿氯气腐蚀。
钛被认为是一种稀有金属,这是由于在自然界中其存在分散并难于提取。但其相对丰富,在所有元素中居第十位。 钛的矿石主要有钛铁矿及金红石,广布于地壳及岩石圈之中。钛亦同时存在于几乎所有生物、岩石、水体及土壤中。从主要矿石中萃取出钛需要用到克罗尔法 或亨特法。钛最常见的化合物是二氧化钛,可用于制造白色颜料。其他化合物还包括四氯化钛(TiCl4)(作催化剂及用于制造烟幕或空中文字)及三氯化钛(TiCl3)(用于催化聚丙烯的生产)。
纯钛和钛钢的区别
纯钛一般是指工业纯钛。钛钢主要是钢材中含有一定比例的钛(主要改变了刚才的硬度和耐腐蚀能力)。
但是两种最明显的区别就是密度了。钛是4.5,钢材是7.9。差别很明显。对于强酸的耐腐蚀性差别非常大。纯钛耐腐蚀,钛钢不耐腐蚀。
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