Friction Characteristics of Synchronization Process Based on Tribo-Thermodynamics

Table 1

Primary material parameters.

Parameters (room temperature)	45 Steel	QSn4-3
Density ρ (kg·m^−3)	7890	8800
Elastic modulus E (GPa)	209	1100
Poisson ratio (μo)	0.27	0.33
Thermal conductivity λ (W·m^−2·K^−1)	48.15	47
Specific heat capacity c (J·kg^−1·K^−1)	450	380
Thermal expansion coefficient (1°C^−1)	1.08e−5	1.8e−5