Thermal Cycling Corrosion Testing of Metals and Alloys

Thermal cycle corrosion test of metals and alloys refers to the thermal cycle exposure oxidation test of metal materials under high temperature corrosion conditions. Thermal cycle corrosion testing of metals and alloys can determine the thermal cycle corrosion properties of metal materials in gas environments from ambient to high temperatures.
Zhongke Testing Reliability Experiment Center has the ability to test the corrosion resistance of various metals and alloys, and provides professional thermal cycle corrosion testing services for metals and alloys.

Metals: Common metals include gold, silver, copper, iron, manganese, zinc, etc., which can be divided into ferrous metals, non-ferrous metals, light metals, rare metals, heavy metals, precious metals, etc.
Alloy: It is classified as a certain alloy according to the name of the main metal with a large content in the alloy. It is generally divided into mixed alloys, solid solution alloys, intermetallic compound alloys, etc. Specific examples include solder, bismuth-cadmium alloy, brass composed of copper and zinc (β-brass, γ-brass and ε-brass), etc.

1. A thermal cycle cycle of metal and alloy thermal cycle corrosion testing includes heating time, holding time, cooling time and cooling holding time.
2. Mainly divided into two major thermal cycle types:
a) Long-term thermal cycle:
Used to simulate the service conditions of large-scale industrial equipment in real applications, such as power plants, waste incineration or chemical industries. In the above-mentioned applications, the metal parts are designed to have a very long service life, such as generally exceeding 100 000 h. Thermal cycling of materials can occur during planned plant shutdowns, such as routine maintenance, or unplanned shutdowns due to abnormal conditions. Therefore, corresponding to the long service time of the parts, the time interval between different thermal cycle cycles is relatively long, and the number of cycle cycles is relatively small, generally about 50 times.
b) Short thermal cycle:
Typical applications include industrial gas turbines, jet engines, automotive parts, heat treatment equipment, etc. These devices typically turn on and off at much shorter intervals than in long-duration applications. At the same time, the design life and/or the time required for complete overhaul/repair (generally 3000 h ~ 30 000 h) are shorter (depending on the specific actual application) and the number of cycles is greater.

GB/T 38231-2019 Corrosion of metals and alloys Test method for thermal cycle exposure oxidation of metallic materials under high temperature corrosion conditions
ISO 13573: 2012 Corrosion of metals and alloys Test method for oxidation of metallic materials by thermal cycle exposure under high temperature corrosion conditions
BS ISO 13573: 2012 Corrosion of metals and alloys Test method for oxidation of metallic materials under thermal cycle exposure to high temperature corrosion conditions
AS 2331.3.12-2006 Test methods for metals and related coatings Tests for corrosion and related properties Cyclic salt spray/UV exposure of organically coated metals
GM GM4359P-2010 Cycle of Stainless Steel Molding Materials Dip Corrosion Test
ISO 26146 Corrosion of metals and alloys Methods for metallographic examination of specimens after exposure to high-temperature corrosive environments