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The protection of traditional grassroots place-making knowledge and skills that comprise valuable intangible heritage has not been attracting enough attention in the field of post-disaster reconstruction and recovery. Based on the Guchengping Village’s reconstruction that followed the Lushan earthquake (Sichuan, China), the purpose of this paper is to identify the benefits of a co-design approach for post-disaster reconstruction and recovery, in order to ascertain various stakeholders’ contributions toward the protection of community-based intangible place-making heritage.

A qualitative method was employed to assist the professional designers in facilitating the co-design approach by bridging governments closer together with local communities. At the governmental level, focus groups and personal interviews were conducted to discover the government’s role in preserving the communities’ intangible heritage. At the community level, community-based workshops and family-based design partnerships engaged various community stakeholders to decipher their roles and contributions toward advancing the heritage age.

As the advocates of intangible heritage, all levels of government guaranteed that intangible heritage would be safeguarded in the government strategic plans. At the community level, local residents played a fundamental role as the grassroots protectors. Professional designers utilized cutting edge technologies to improve weaknesses found in the traditional knowledge and skills, by performing the protection in practice. Community-based service agencies promoted the value of heritage to address societal issues.

The co-design approach offered a new method of intangible heritage protection in post-disaster reconstruction and recovery by engaging different stakeholders, in order to effectively transfer the governmental strategic plans into community-based action plans, and in turn, enabled the grassroots voice to inform the government policies.

The purpose of this study is to develop a monolayer surface coating of stearic acid on Sn-Ag-Cu solder powder to limit oxidation.

Stearic acid was adsorbed onto Sn-Ag-Cu solder powder through liquid-phase adsorption. The isotherm of adsorption was measured and then the microstructure of coated powder was characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy.

The adsorption isotherm of stearic acid on the powder was “H” type, which revealed the layer-by-layer adsorption on non-porous surface. When the concentration of solution was in the range of 0.001-0.006 mol/L, with an adsorption amount of 0.12 ± 0.1 mg/g, monolayer stearic acid covered the solder powder completely. Uniform and integrated self-assembled monolayer coating was formed through hydrogen bonds between the oxygen ions in surface lattice of Sn3.0Ag0.5Cu solder powder and the —O—H hydroxyl group of stearic acid. The maximum angle of stability of coated powder also reduced by 2.87° compared with that of non-coated powder. The increase rate of oxygen content of coated powder was much slower than that of non-coated powder when they were exposed to humid air.

As a result, oxidation of fine solder powder was effectively limited. Essentially, this method can also be applied to the coating of other types of solder powder and has reference significance to other coating by liquid-phase method.