行业组件数据 · 2026

铜基体

繁體:銅基體

铜基体是指高纯度铜母线合金中构成结构骨架的连续金属铜相。

技术定义与适配语境
典型 铜基体 会按材料、尺寸公差、适配关系和失效风险在 基础金属制造 中评估。

铜基体是指高纯度铜母线合金中构成结构骨架的连续金属铜相。该组分占材料组成的99.9%或以上,负责以最小电阻传导电流,同时在热应力和机械应力下保持机械完整性。它是合金元素或杂质分散的基础,其晶体结构经过优化以实现最大电子迁移率和热耗散。 铜基体基于金属导电原理工作,其中自由电子在晶格中移动且散射最小。其面心立方(FCC)晶体结构为电子移动提供了多个滑移面,而高纯度(通常为99.95-99.99% Cu)最小化了杂质散射。在运行过程中,电子通过基体流动,电阻由其纯度、温度和晶体完整性决定,电阻产生的热量通过相同的金属结构有效传导出去。

组件规格

定义
铜基体是指高纯度铜母线合金中构成结构骨架的连续金属铜相。该组分占材料组成的99.9%或以上,负责以最小电阻传导电流,同时在热应力和机械应力下保持机械完整性。它是合金元素或杂质分散的基础,其晶体结构经过优化以实现最大电子迁移率和热耗散。

铜基体基于金属导电原理工作,其中自由电子在晶格中移动且散射最小。其面心立方(FCC)晶体结构为电子移动提供了多个滑移面,而高纯度(通常为99.95-99.99% Cu)最小化了杂质散射。在运行过程中,电子通过基体流动,电阻由其纯度、温度和晶体完整性决定,电阻产生的热量通过相同的金属结构有效传导出去。
工作原理
The copper matrix operates on the principle of metallic conduction, where free electrons move through the crystalline lattice with minimal scattering. Its face-centered cubic (FCC) crystal structure provides multiple slip planes for electron movement, while high purity (typically 99.95-99.99% Cu) minimizes impurity scattering. During operation, electrons flow through the matrix with resistance determined by its purity, temperature, and crystalline perfection, with heat generated by resistance being efficiently conducted away through the same metallic structure.
材料
高纯度电解韧铜(ETP-Cu)或无氧高导电铜(OFHC-Cu)铜含量最低99.95%微量元素总量控制在<0.05%OFHC等级的氧含量<0.001%晶粒尺寸控制在50-200 μm之间。
Density
8.96 g/cm³
Hardness
40-110 HV
Elongation
15-45%
Melting Point
1083°C
Yield Strength
60-320 MPa
Tensile Strength
200-360 MPa
Thermal Conductivity
≥385 W/m·K at 20°C
Electrical Conductivity
≥100% IACS (International Annealed Copper Standard)
Maximum Operating Temperature
250°C continuous, 300°C short-term
Coefficient of Thermal Expansion
16.5 × 10⁻⁶/°C (20-300°C)
标准
ISO 1337ISO 431DIN 40500DIN 1787ASTM B187IEC 60228

行业分类与别名

铜基体 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Surface oxidation forming non-conductive copper oxide layer->Increased contact resistance leading to localized heating and potential thermal runaway->Apply protective coatings (tin, silver, or nickel plating), maintain clean contact surfaces, use antioxidant compounds
Thermal cycling causing work hardening and microcracking->Reduced mechanical strength and eventual fracture under mechanical stress->Design for thermal expansion, use annealed tempers for cyclic applications, implement thermal management systems
Impurity segregation at grain boundaries during manufacturing->Reduced conductivity and increased susceptibility to intergranular corrosion->Strict material purity controls, proper heat treatment cycles, grain boundary engineering

工业生态与工程逻辑

0
Oxidation and corrosion reducing conductivity
1
Thermal fatigue from cycling
2
Creep deformation under sustained load
3
Hydrogen embrittlement in oxygen-containing grades
4
Galvanic corrosion when contacting dissimilar metals

合规与检测

tolerance
Dimensional tolerance ±0.5% of nominal dimensions, flatness ≤0.1 mm per 100 mm, surface roughness Ra ≤1.6 μm for contact surfaces
test method
Electrical conductivity measured by eddy current method per ASTM E1004, metallographic analysis per ASTM E3, mechanical testing per ASTM E8/E8M, chemical composition by optical emission spectroscopy per ASTM E415

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采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between ETP and OFHC copper matrices?

ETP (Electrolytic Tough Pitch) copper contains 0.02-0.04% oxygen which improves castability but can cause embrittlement at high temperatures. OFHC (Oxygen-Free High Conductivity) copper has <0.001% oxygen, providing better ductility and resistance to hydrogen embrittlement, making it superior for high-temperature applications.

How does grain size affect copper matrix performance?

Smaller grain sizes (50-100 μm) increase strength but slightly reduce conductivity due to increased grain boundary scattering. Larger grains (150-200 μm) maximize conductivity but reduce mechanical strength. Optimal grain size balances these properties for specific applications.

What maintenance is required for copper matrix components?

Regular inspection for oxidation, thermal cycling damage, and mechanical deformation. Periodic cleaning with non-abrasive methods to remove surface oxides, and torque verification for bolted connections. No routine replacement needed under normal operating conditions.

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CNFX Industrial Component Index · 基础金属制造

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初步技术归类
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URN:CNFX:ME:UNIT:COPPER_MATRIX