The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
May. 16, 2024
Chinalco Research Institute of Science and Technology Co., Ltd, Beijing, CN;
China Copper Industry Co., Ltd, Kunming, CN;
Zhongping Chen, Beijing, CN;
Huafen Lou, Beijing, CN;
Chaojian Xiang, Beijing, CN;
Hu Wang, Beijing, CN;
Yongda Mo, Beijing, CN;
Miaomiao Wang, Beijing, CN;
Chinalco Research Institute of Science and Technology Co., Ltd, Beijing, CN;
China Copper Industry Co., Ltd, Kunming, CN;
Abstract
The disclosure provides a modified tin-phosphor bronze alloy and a preparation method thereof. The modified tin-phosphor bronze alloy comprises the following elements in percentage by mass: 4.0-10 wt % of Sn, 0.01-0.3 wt % of P and the balance of Cu and inevitable impurity elements, the average grain size of the modified tin-phosphor bronze alloy is 1-3 μm, the grain size is in normal distribution, and the standard deviation of the grain size is below 0.8 μm; the proportion of the total low-CSL grain boundary in the modified tin-phosphor bronze alloy in the whole grain boundary is 66-74%, and in the total low-ΣCSL grain boundary, the ratio range of (Σ9+Σ27)/Σ3 is (0.12-0.23):1. The modified tin-phosphor bronze alloy of this disclosure enables a finished alloy can give consideration to both tensile strength and excellent bending performance.