Heritage Science

Table 4 Cu concentration at different diffusion distances

From: Formation mechanism of copper-gilded coronet ornaments excavated from a Sui or early Tang tomb situated in Xi’an, Shaanxi

Diffusion distance/μm^a	Cu content (wt.%) ^b
0	100.0
~ 1	23–39
> 2	5–7

^aAlong the copper diffusion direction in Fig. 6
^bConcentration range obtained after multi-point measurements

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