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\documentclass[12pt,a4paper]{article}
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\hypersetup{colorlinks=true,linkcolor=blue,citecolor=blue}

\title{¶à¿×²ÄÁÏÖÆ±¸ÖÐÔì¿×¼ÁÌå»ý·ÖÊýµÄ°²È«´°¿ÚÉè¼Æ\\[0.3em]
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\begin{document}

\maketitle

\section{ÒýÑÔ}
ÔÚ·Ûĩұ½ð·¨ÖƱ¸¶à¿×²ÄÁÏʱ£¬Ôì¿×¼ÁÌå»ý·ÖÊý \(V_{\text{pore}}\) ÊǾö¶¨ÉúÅ÷³ÉÐÍÐÔ¡¢¿×϶½á¹¹¼°ÉÕ½áºóºê¹ÛÐÔÄܵĹؼü²ÎÊý¡£¹ý¸ßµÄÔì¿×¼Áº¬Á¿»áµ¼Ö»ùÌå²»Á¬Ðø£¬ÉúÅ÷ËúÏÝ£»¹ýµÍÔò¿ÉÄÜʹÔì¿×¼Á±»ÍêÈ«°üÂñ£¬ÎÞ·¨ÓÐЧȥ³ý¡£±¾ÎÄ»ùÓÚ¾­µä¶Ñ»ýÀíÂÛºÍÉøÁ÷ÀíÂÛ£¬ÍƵ¼Ôì¿×¼ÁÌå»ý·ÖÊýµÄÀíÂÛ°²È«´°¿Ú£¬²¢½áºÏ¹¤³Ìʵ¼ùÖеĶîÍâÔ¼Êø£¨ÉÕ½áÊÕËõ¡¢È¥³ý¶¯Á¦Ñ§¡¢³ÉÐ͹¤ÒÕ¡¢¸÷ÏòÒìÐԵȣ©Ìá³öÐÞÕýºóµÄ¹¤³Ì°²È«´°¿Ú¡£

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\begin{itemize}
    \item ´ó¿ÅÁ££¨Ôì¿×¼Á£©£¬Ö±¾¶ \(d_{\text{pore}}\)£¬Ìå»ý·ÖÊý \(V_{\text{pore}}\)
    \item С¿ÅÁ££¨»ùÌå·ÛÄ©£©£¬Ö±¾¶ \(d_{\text{alloy}}\)£¬Ìå»ý·ÖÊý \(V_{\text{alloy}} = 1 - V_{\text{pore}}\)
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\begin{enumerate}
    \item Á£¾¶±È \(R = d_{\text{pore}} / d_{\text{alloy}} > 7\)--\(10\)£¬Ð¡¿ÅÁ£¿ÉÓÐЧÌî³ä´ó¿ÅÁ£¼ä϶£»
    \item ´ó¿ÅÁ£ÎªËæ»ú¶Ñ»ý£¬¶Ñ»ýÃÜ¶È \(\rho_{\text{large}}\)£¬¿×϶ÂÊ \(\phi_{\text{void}} = 1 - \rho_{\text{large}}\)£»
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\end{enumerate}

\subsection{Furnas ¶Ñ»ýÄ£ÐÍÓë¼ä϶Ìî³ä}
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\rho_{\text{mix}} = \rho_{\text{large}} + (1 - \rho_{\text{large}}) \cdot \rho_{\text{small}}.
\end{equation}
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\begin{equation}
V_{\text{fill}} = \eta \phi_{\text{void}} V_{\text{pore}}.
\label{eq:fill}
\end{equation}
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V_{\text{free}} = V_{\text{alloy}} - V_{\text{fill}} = 1 - V_{\text{pore}} - \eta \phi_{\text{void}} V_{\text{pore}} = 1 - V_{\text{pore}}(1 + \eta \phi_{\text{void}}).
\end{equation}
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\begin{equation}
1 - V_{\text{pore}}(1 + \eta \phi_{\text{void}}) > 0.20.
\end{equation}
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\begin{equation}
V_{\text{pore}} < \frac{0.8}{1 + \eta \phi_{\text{void}}}.
\label{eq:upper}
\end{equation}
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\begin{equation}
V_{\text{pore}} > p_c^{\text{eff}}.
\label{eq:lower}
\end{equation}

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×ÛºÏʽ \eqref{eq:upper} Óë \eqref{eq:lower}£¬µÃÀíÂÛ°²È«´°¿Ú£º
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p_c^{\text{eff}} < V_{\text{pore}} < \frac{0.8}{1 + \eta \phi_{\text{void}}}.
\label{eq:window_theo}
\end{equation}

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V_{\text{pore}}^{\text{max, eng}} = \min\left( V_{\text{pore}}^{\text{max, theo}}, \quad V_{\text{shrinkage}}(S_{\text{tol}}) \right),
\end{equation}
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V_{\text{pore}}^{\text{min, eng}} = p_c^{\text{eff}} + \Delta V_{\text{kinetic}}(L, t_{\text{process}}),
\end{equation}
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\end{itemize}

\section{Ó¦ÓÃʵÀý£ºAlCoCrFeNi\(_{2.1}\) + NaCl Ìåϵ}
\subsection{ÀíÂÛ´°¿Ú¼ÆËã}
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\[
V_{\text{pore}}^{\text{max, theo}} = \frac{0.8}{1 + 0.7 \times 0.45} \approx 0.61.
\]
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\subsection{¹¤³ÌÐÞÕý}
\begin{itemize}
    \item \textbf{ÏÂÏÞÌáÉý}£º¿¼ÂÇ NaCl ÈܽâÀ©É¢¼°ºñ±ÚÁã¼þ£¨>5 mm£©£¬È¡ \(\Delta V_{\text{kinetic}} = 0.10\)£¬µÃ \(V_{\text{pore}}^{\text{min, eng}} = 0.25\)¡£
    \item \textbf{ÉÏÏÞ½µµÍ}£º¿¼ÂÇÉÕ½áÊÕËõ£¨Ô¤Áô 5\% Ô£¶È£©¼°µ¥ÏòÑ¹ÖÆ·çÏÕ£¬È¡ \(V_{\text{pore}}^{\text{max, eng}} = 0.30\)¡£
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\[
\boxed{0.25 \le V_{\text{pore}} \le 0.30}.
\]
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\section{½áÂÛ}
\begin{enumerate}
    \item »ùÓÚ Furnas ¶Ñ»ýÄ£ÐÍÓëÉøÁ÷ÀíÂÛ£¬½¨Á¢ÁËÔì¿×¼ÁÌå»ý·ÖÊýµÄÀíÂÛ°²È«´°¿Ú£º\(p_c^{\text{eff}} < V_{\text{pore}} < \dfrac{0.8}{1 + \eta \phi_{\text{void}}}\)¡£
    \item ¹¤³Ìʵ¼ùÖУ¬ÉÕ½áÊÕËõ¡¢È¥³ý¶¯Á¦Ñ§¡¢³ÉÐ͹¤ÒÕ¼°¸÷ÏòÒìÐÔµÈÒòËØ»á½øÒ»²½ÊÕÕ­¸Ã´°¿Ú£¬ÐèÒýÈë¾­ÑéÐÞÕýÏî¡£
    \item ¶ÔÓÚ AlCoCrFeNi\(_{2.1}\) + NaCl Ìåϵ£¬ÍƼö¹¤³Ì´°¿ÚΪ \(0.25 \le V_{\text{pore}} \le 0.30\)£»ÈôÐè¸ü¸ß¿×϶ÂÊ£¬½¨Òé²ÉÓÃÇòÐÎÔì¿×¼Á²¢²ÉÓõȾ²Ñ¹³ÉÐÍ¡£
\end{enumerate}

\begin{thebibliography}{99}
\bibitem{furnas1931} Furnas C C. Grading Aggregates I ¨C Mathematical Relations for Beds of Broken Solids of Maximum Density. Industrial \& Engineering Chemistry, 1931, 23(9): 1052¨C1058.
\bibitem{german2014} German R M. Powder Metallurgy and Particulate Materials Processing. Metal Powder Industries Federation, 2014.
\bibitem{sahimi1994} Sahimi M. Applications of Percolation Theory. Taylor \& Francis, 1994.
\end{thebibliography}

\end{document}
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\date{}

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