The South China University of Technology

Guangzhou Special Pressure Equipment Inspection and Research Institute

Weiwen Ye

Chao Yang

Hui Zhang

Bo Yang

Yuanyuan Li

Ming Zeng

Maodong Li

Jinmei Lin

Zhigang Chen

Wen Yu

Juan Liu

Weiwen Zhang

Fen Wang

Hua Li

Junming Zhao

Zongjie Yin

Zhiyu Xiao

A preparation method for high-strength and low-modulus β-type Si-containing titanium alloy involves: preparing an alloy component with, in atomic percentage, 60-70% of Ti, 10-20% of Nb, 5-15% of Zr, 1-10% of Ta and 1-5% of Si and using sponge titanium, sponge zirconium, a tantalum-niobium intermediate alloy and silicon as raw materials, and then uniformly smelting the alloy components to obtain a solidified ingot; then, subjecting the resulting ingot to plastic deformation with a deformation temperature of 800-900° C. and a deformation rate of 60-80%, and water-quenching same to room temperature; and finally, heating the resulting test sample to a recrystallization temperature, maintaining the temperature for 1-4 h, and carrying out an annealing treatment and air-cooling same to room temperature to obtain the high-strength and low-modulus β-type Si-containing titanium alloy. The resulting titanium alloy is more suitable for use as a medical implant material.

High-strength and low-modulus β-type Si-containing titanium alloy, preparation method therefor and use thereof

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

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Guangzhou, China

Weiwen Ye