高温沉积试验（HTDT）方法旨在评估航空燃气涡轮发动机某些零件在混合相流条件下受到应力时涡轮润滑剂的沉积和降解特性。该方法适用于在试验过程中形成0.1至100 mg沉积物的润滑剂。

The high-temperature deposition test (HTDT) method is designed to evaluate the deposition and degradation characteristics of turbine lubricants when stressed under mixed-phase flow conditions found in certain parts of aviation gas turbine engines. This method is applicable to lubricants that form deposits in the range of 0.1 to 100 mg during the course of a test.