2 results about "Microscopic observation" patented technology

The invention belongs to the technical field of advanced deformed superalloy materials and metallographic analysis and relates to a metallographic etchant capable of clearly displaying a delta phase in a GH4169 alloy and an application method. The etchant is prepared from the following main components of 50-55g of copper chloride, 100-120ml of concentrated hydrochloric acid, 1-3ml of concentratedsulfuric acid and 90-110ml of methanol. The method is characterized by comprising the following steps of grinding and polishing a deformed superalloy sample; preparing an etchant; mixing the etchant;adjusting and controlling the temperature; carrying out etching; cleaning the sample by using flowing clear water; drying the etched surface of the sample with hot air; and observing a delta phase through a metallographic microscope. The etchant provided by the invention is simple and convenient to prepare, the delta phase in the GH4169 alloy can be quickly displayed, the etching effect is good, display of the delta phase is clear, the phenomenon of overetching or uneven etching is avoided, and the metallographic etchant is very suitable for evaluation of the metallurgical quality of GH4169 alloy bars and forging and analysis of the metallurgical defects.

The invention provides an optical microscopic observation device and method.The observation device comprises a high-pressure kettle, image acquisition equipment, observation equipment, a glass visual model and displacement equipment, a confining pressure cavity is formed in the high-pressure kettle, a light source window and an observation window which are opposite to each other are arranged on the high-pressure kettle, and the glass visual model is located between the light source window and the observation window; the observation equipment comprises an objective lens and an objective lens adjusting device, the objective lens is located between the glass visual model and the observation window, the objective lens adjusting device is connected with the autoclave and comprises an adjusting piece capable of moving in the direction close to or away from the glass visual model, and the objective lens is arranged on the adjusting piece; the adjusting part adjusts the distance between the objective lens and the glass visual model through movement. The micro object distance microscopic observation method in which the objective lens and the imaging system are separated is adopted, so that a finer pore channel can be observed under a high-pressure condition, the bottleneck that a pore channel with the diameter of 10 microns can only be observed under normal pressure is broken through, and the method is suitable for micro object distance microscopic observation under most oil reservoir conditions.