Titanium is a highly valued metal for its outstanding properties. Its production is costly due to its strong reactivity with oxygen, thus there are strong demands to reduce oxygen content in Ti scraps, turnings, chips, chunks, and powders for the purpose of recycling, reuse and high-quality powder production. This article reviews the current methods for reducing oxygen content (i.e. methods of deoxygenation) in Ti and its alloys, particularly metal in powder form, including Ca metal-based methods, Mg metal-based methods, electrochemical methods, and others based on remelting. Even though the details of the operations of each process vary, they share some of the same theoretical basis of relative chemical stabilities. Here we outline and evaluate these methods in terms of the fundamental principles, processing techniques, results and the pros and cons of each method.

钛因其出色的性能而成为极有价值的金属。由于其与氧气的强反应性，其生产成本很高，因此强烈要求降低钛废料，车削，切屑，块料和粉末中的氧气含量，以实现回收，再利用和高质量粉末生产。本文概述了目前用于降低Ti及其合金（尤其是粉末形式的金属）中氧含量的方法（即脱氧方法），包括基于Ca金属的方法，基于Mg金属的方法，电化学方法以及其他基于重熔的方法。即使每个过程的操作细节有所不同，它们也具有相对化学稳定性的某些相同理论基础。在这里，我们根据基本原理，处理技术，