Surface Hardness Test Method of Thermal Spray Coating When the thickness of thermal spray coating is thin, such as the thickness of spray coating is less than 0.15 mm, the Vickers and Knoop microhardness test of metal coating and other related coatings (GB 9790-88) can be referred to. When the ... Read More

UV light is responsible for almost all photodegradation of durable materials exposed outdoors. Fluorescent UV lamps are inherently more stable than other types of lamps, including xenon arc lamps. The spectral power distribution (SPD) does not change with lamp aging, even up to 8,000 hours. This ... Read More

What is Alloy Segregation? When an alloy solidifies from liquid to solid, the constituent elements are unevenly distributed in different parts. This phenomenon is called segregation. 1. Gravity Segregation. This segregation is caused by the difference in density between the constituent phase and the ... Read More

What is CASS testing? The Copper Accelerated Acetic Acid Salt Spray (CASS) test, often referred to as the Salt Fogging Test, is used to simulate and evaluate the corrosive performance of decorative copper/nickel/chromium or nickel/chromium coatings on steel, zinc or aluminium alloys and plastics ... Read More

An Explanation of the Echo-to-Echo Measurement Technique Introduction: The ultrasonic echo-to-echo technique utilizes gates set around two consecutive backwall echoes and measures the difference between them. This difference negates the coating thickness and returns just the part thickness. The echo... Read More

Metallographic Sample Preparation Process Metallographic sample preparation usually includes sampling, inlaying, grinding, polishing, etching and other work processes, which require certain technical skills to support in order to produce qualified metallographic samples that meet microscopic ... Read More

Metal Fatigue Failure and Characteristics Fatigue failure refers to the phenomenon that metal materials fail due to cumulative damage after a certain number of cycles under the action of variable loads. Fatigue failure has a certain degree of contingency and randomness, and the probability of ... Read More

What Are the Characteristics of Austenitic Stainless Steel? It is an austenite phase at room temperature. The Cr content is greater than 13% to increase the electrode potential of iron, thereby improving the corrosion resistance of the material. The Ni content is also high. On the one hand, it can ... Read More

What Is Plastic Deformation In Metals? Deformation of materials can be defined as macroscopic changes to the size and shape of materials under the effect of mechanical loading, thermal loading or phase transformation, etc. From a mechanical point of view, it is possible to classify deformation into ... Read More

Cleavage Fracture of Metal Materials The fracture form of metal materials separated along a specific crystal plane under the action of tensile stress is called cleavage fracture. The plane where this fracture occurs is called the cleavage plane. Cleavage fracture is a brittle fracture. Cleavage ... Read More